FOGARTY INVENTS A NONINVASIVE CLOT BUSTING DEVICE.
A type of catheter incorporating a small ballon which may be introduced into a, duct, canal, blood vessel and inflated in order to clear an obstruction or dilate a narrowed region.
Thomas Fogarty was working as a scrub technician at the good Samaritan hospital, Cincinnati, Ohio, when he noticed the difficulty surgeon had in removing blood clot that formed in arteries and veins. The operation which often took nine to twelve hours to perform, necessitated opening up the entire length of the vessels and often resulted in the patient dying or having their limb amputated.
Fogarty devised a scheme that could be used to overcome the need for invasive surgery. It involved using a urethral catheter, which is flexible and strong enough to be pushed through a blood vessels and penetrate the blood clot.
Working in his, fogarty had the further inspiration to use the fly tying skill he had learned as a fisherman to attach "fingertip" of a latex glove to the catheter, which could then be inflated with saline once it was past the clot. The idea is that the balloon expands to the size of the artery and is then pulled back out, bringing the clot with it.
In 1961, fogarty's balloon Embolectomy catheter named for the clot removal procedure was used for a first time on a human patient. A small incision was made, and the catheter was threaded up through the patients blocked artery. When inflated and pulled back out, it did indeed bring the clot out with it.
Today fogarrtys balloon catheter is the still most widely used technique for blood clot removal. The technology has also been extended for use in angioplasty, where balloon are inflated to widen narrowing in the heart arteries that cause symptoms of angina.
renal denervation, cryoablation, balloon sinuplasty,TAVI (Transcatheter aortic valve implantation), drug delivery, stent delivery, balloon occlusion which are the common application for balloon catheters.
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